Which Epoxy!

[JohnC]

I am assembling materials for my project and I see there is a huge difference in cost between different brands of epoxy (I plan to use epoxy for transom layup and for sticking cured parts together. I was planning to use E-Bond 1285 (about $35/Gal @ Merritt). I have used WEST 105 in the past for small projects but I would not want to pay that much for a larger project (about $85/Gal @ Merritt). Fiberglassflorida.com has their own brand for around $48/Gal and I have heard good things about Raka, available from Gulfstreamcomposits.com (about $65/Gal, also happens to be a CSC Vendor).
I realize that viscosity plays a role in different types of layup processes and for that reason, one size may not fit all. Could someone please enlighten me on the good/bad/watch out things to consider with different epoxies?